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Best energy efficiency auditors near Exeter, NH

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Top-Rated Energy efficiency auditors in Exeter - Updated Nov 2026

Avatar for AVID Energy Solutions
AVID Energy Solutions
4.9(
19
)
Home Energy AuditEnergy Audit - For Business

Serving Exeter, NH and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"I recently had an energy audit and insulation work done by Avid Energy, and honestly, the whole experience was great. The team was friendly, knowledgeable, and really easy to work with from beginning to end. They took the time to walk me through the audit results, suggested practical improvements, and got the insulation work done quickly and without any mess. It’s only been a short time, but the last couple hot days my house has stayed cool when in the past the ac used to be running all the time…the insulation definitely made a difference."
95 neighbors recently requested a quote
Avatar for Airco Home Comfort Services LLC
Airco Home Comfort Services LLC
4.7(
33
)
Energy Audit - For BusinessHome Energy Audit

Serving Exeter, NH and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"I whole heartedly recommend Airco. Their team was experienced, skillful, friendly and professional throughout the duration of this job, from Joe's first visit to my home to discuss air conditioning options to Derek and Cam's final touches on the duct system. I had complete confidence in them, as well as in Steve, Danny, Frank and Patrick. Additionally, Airco's connections to MassSave and Commerce Bank meant financing and payment options to suit my budget. No more hauling loud and heavy window a.c. units up from the basement. Instead, I am enjoying consistent cooling throughout my home with no noise whatsoever. I am a very happy customer!"
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+4

Response time2 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
SunReign - No-Cost Solar Installations
5.0(
5
)
Energy Audit - For BusinessHome Energy Audit

Serving Exeter, NH and surrounding areas

In business since 2020

Free estimates

Emergency services offered

Ask us about our No-Cost Power Purchase Agreement Solar Installations. Full Service Solar Installation/repair and Roofing Repair/Replacement Pro. Sunrun where we revolutionize the solar industry with an innovative business model by providing solar as service. \nFor qualified homeowners, Sunrun may provide all solar equipment and electrical upgrades including installation, monitoring and maintenance, at no cost. \nWe also provide free evaluation and digital custom design.\n\nBook a free consultation with me today!\n\nhttps://www.facebook.com/SunReign-102844865174572/\n\nhttps://app.repcard.com/dinodibenedetto

Zero cost savings
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+2

Recommended by100%of homeowners
Building Alternatives Inc
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Exeter, NH and surrounding areas

In business since 1986

Free estimates

We are independent; we work for you the home owner. Many of our competitors work for suppliers and may only offer you one solution, because that is what they sell. They also may not have the breadth of knowledge (we have 30+ years) to offer you all the options you need to make a decision. We are NOT owned by a trade or supplier, thus we will provide you all the options you need to effectively make your home more energy efficient \nWe have considerable experience in building energy efficient homes and in using the different technologies, modular, timberframe. SIPS, ICF and 2x6 panelized to build a home. This experience makes it easy to identify problem that are caused by the specific construction. Without this experience opportunities will be missed. We will recommend renewable energy options for your new or remolded green home. \n \nBBB - Member in Excellent standing from 1988 to present \nManchester Chamber of Commerce - Member in Ecellent standing from 1987 to present \n

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Energy Efficiency Auditing FAQs, answered by experts

Window AC units use a fair amount of electricity, but significantly less than central AC systems. Because they are more energy-efficient for cooling individual rooms or small spaces, their usage is comparatively low. On average, a window AC unit consumes between 500 and 1,400 watts, while a central AC system uses over 3,500 watts—meaning a window unit uses about one-third of the energy. This typically translates to a monthly running cost of $15 to $40, although this can vary depending on external factors.

Yes, these services often increase home value by preventing moisture-related issues and enhancing the usable space in basements or crawlspaces.

STC (Sound Transmission Class) is a rating that describes how well a building material or assembly blocks airborne sound. A higher STC rating means less noise will pass through the material, providing better sound reduction. This rating system applies to various building components, including windows, doors, flooring, drywall, and insulation.

For context, a typical single-pane window has an STC rating of around 25 (where normal conversations are audible), while a well-sealed, double-pane window can exceed STC 45 (blocking loud speech and most music). It is important to note that for some products, like soundproofing drywall, the STC rating refers to the entire wall system, not just the individual panel.

Additionally, STC ratings are most effective for measuring sound reduction at mid-to-high frequencies, such as human speech, and may not accurately reflect how well a material blocks low-frequency sounds like bass music or thunder. Because of these factors, it is recommended to consult a professional to determine the right STC-rated materials for your specific soundproofing needs.

Audits typically take 2-4 hours, depending on the property size and energy systems.

The difference between an energy auditor and a home inspector is primarily in the purpose of the inspection. The energy auditor conducts tests in your home to determine the energy efficiency levels in areas like windows, insulation, and doorways. The auditor then makes recommendations for ways to improve a home’s energy efficiency. 

A home inspector examines various structures of your home to determine that everything is up to code and gauge the condition of features like the roof, foundation, HVAC, and electrical. The home inspector reports on the overall home and makes repair recommendations.

The Exeter, NH homeowners’ guide to energy efficiency auditing services

From average costs to expert advice, get all the answers you need to get your job done.